Glad that’s at least UHF… That way only some of that RF will bounce around in the truck cab like a microwave oven 
Why not just get a mobile if using in a truck? My arms aren’t long enough to hold that at a distance where I could still talk clearly and feel safe at the same time. Are you planning to run an antenna outside the truck and use it like a mobile? That wouldn’t be too bad if they make a decent 12v adapter to keep it powered I suppose.